Knot-tying mechanism for use in warp-tying



April 21, 1925. 1,534,441

J. COVELESKIE KNQT TYING MEGHANISM USE IN WARP TYING Filed Aug. J,y 1923 2 Sheets-Sheet 1 2H!! IIIIIIIIIIIIIIIIIllllllllllllllllll Apnl 21, 1925. 1,534,441

' J. COVELESKIE KNOT TYING MECHANSM FOR USE IN WARP TYING;`

Filed Aue.. J, 1925 2 Sheets-Sheet 2 Cil cates at the same rate as the split hook. The shaft 2a carries a similar hand 2G whichv grasps the arch carrying disc 5.

The drive shaft 14 carries also a gear 19 which meshes with a gear keyed upon the shaft 6 which carries therotating table i). The discs 5 and 8 are rot-ated with the table 9 by means of an eccentric rod 28 carried by the table and passing eccentrically through the discs 5 and S. A link 29 connects this rod to the shaft 6.

The slack and tension cam 2 is also operated from the main drive shaft through a shaft having at its end a bevel gear 3l which engages a bevel gear 32 mounted on the end yof the shaft la.

The various parts of this device rhave been described in great detail for the purs pose of illustration, but it is understood that many changes may be made Without departing from the spirit of fthe invention which is to be limited only by the claims.

For example, While I prefer to use wire arches, such as are shown in the drawing, I may, if desired, substitute other rotating and reciprocating loop forming members.

What I claim :v

l. In a knot-tying mechanism, in combination, a rotating disc or table, a pair of spaced loop-forming members extending through said table, means forreciprocating said loop-forming members, a hook reciprocating intermediate said loop-forming mem* bers, and means for reciprocating said hook `in timed relation to said loop-forming members.

2. A combination thread tying and cutting mechanism comprising means for forming a loop in the thread, a reciprocating hook adapted to draw the Waste ends of the thread through the loop for tying the same, and a thread cutting knife extending transversely through the hook but not reciprocable therewith, whereby Whenythe hook is retracted for tying the knot the ends of the thread are brought in contact with said knife and severed.

`between fixed members,

3. A combined knot tying and Wasteend cutting mechanism for threads and the like, comprising means for forming a loop intermediate the ends of the threads, a reciprocating split hook adapted to draw the Waste ends ofthe thread through the loop to form a knot, and a knife extending transversely through the split hook, but not reciprocable therewith, whereby when the knot is formed the Waste ends of the threads are simultaneously `cut off in the same operation.

4. In a device ofthe character described, in combination, a pair of threads supported a slack and tension cam adapted to engage `said threads intermediate the fixed members for regulating `the tension thereof, and a. knot-tying mechanism intermediate said cam and one of the `fixed members, comprising a pair of spaced arches adapted to engage the threads, means for rotating said arches for forming a loop in said threads, a hook mounted interme diate the arches and adapted to engage the threads beyond the loop, means for reciprocating said hook for drawing the ends of the thread through said loop, and means for reciprocating said arches.

5.V In a knot-tying mechanism, in combination, a rotating table, a pair of spaced loop forming members extending through said table, a boss on said table `intermediate the arches and having a central aperture, a split, reciprocating, knot forming hook adapted to be projected or retracted through said aperture, and a thread cutting knife Vsecured to said table transversely of said aperture, on the face of said table opposite said boss, and extending transversely through said hook, means for supporting a pair of threads Within the path of said loop forming members and knot forming hook, and means for adjusting the tension of said threads according to the operation being performed.

In testimony whereof I aiix my signature-` JOSEPH covntnsmn. 

